HELP! Sarah wanted to find out how tall a building was downtown. He father said to use a right angle and proportions. She did this by taking a yardstick outside beside the building and measured both shadows at the same time of the day. The shadow of the yardstick was 1 foot long. The shadow of the building was 20 feet long. How tall is the building?

is it 20 times of the stick?

Step-by-step explanation:

x= height of stick

y= height of building

idk if i did it the right way, but i use x/y = 1/20

and pls tell me what is it called?

111

step-by-step explanation:

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)